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As we all know, cemented carbide has a wide range of applications in the industrial field, and the cemented carbide punch we are going to talk about today is one of them. The cemented carbide punch, also known as the cemented carbide punch, is a precision die part with high precision, high hardness and good bending strength made of cemented carbide round bar. Usually, we use carbide punch, die button and bushing together for stamping iron tower.
Aluminum alloy die castings play an important role in today's industry and are widely used in many industries. With the continuous development of society, people's living needs are getting higher and higher, and the demand for aluminum die casting process is also increasing.
The domestic traditional casting production process belongs to the non-digital simulation process mode, and the production process and casting result prediction highly depend on the personal experience and ability of technicians. Other industrial products manufacturing industries (automobile, aerospace, shipbuilding, machining, etc.) have gradually completed the full digital upgrade of design and manufacturing.
1) The design of the die casting itself is unreasonable: the wall thickness, shape, round corner, demoulding angle and porosity are not appropriate. 2) Performance problems of die-casting machine: insufficient injection force and locking force, improper casting pressure and filling speed, mismatching of casting size and projected area of die-casting machine capacity, etc.
Zinc die-casting is the process of filling molten zinc into the mold cavity rapidly and under high pressure. The time for liquid zinc to fill the cavity of the die-casting mold is very short, which is usually several hundredths of a second or several thousandths of a second. The pores formed in the process of die casting have smooth surface, and the shape is mostly circular or elliptical. They mostly exist on the surface or subcutaneous pores of the casting, and may also exist in the casting. The main source of pores is the gas involved in the process of die casting or the gas evolution of zinc liquid. 1、 Air entrainment during die casting.
Reasons for deformation: the overall or local geometry and design of the die casting do not match the finished product, which is called deformation. 1. The structural design of die castings is not perfect, which is caused by uneven shrinkage; 2. The temperature of die casting mould is high, the hardness of its own mould is not enough, and the cooling time is not enough; 3. The mold setting position is unreasonable and deflected;